libreoffice/embeddedobj/source/msole/olecomponent.cxx

/*************************************************************************
 *
 *  $RCSfile: olecomponent.cxx,v $
 *
 *  $Revision: 1.11 $
 *
 *  last change: $Author: mav $ $Date: 2003-12-09 15:09:35 $
 *
 *  The Contents of this file are made available subject to the terms of
 *  either of the following licenses
 *
 *         - GNU Lesser General Public License Version 2.1
 *         - Sun Industry Standards Source License Version 1.1
 *
 *  Sun Microsystems Inc., October, 2000
 *
 *  GNU Lesser General Public License Version 2.1
 *  =============================================
 *  Copyright 2000 by Sun Microsystems, Inc.
 *  901 San Antonio Road, Palo Alto, CA 94303, USA
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License version 2.1, as published by the Free Software Foundation.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *  MA  02111-1307  USA
 *
 *
 *  Sun Industry Standards Source License Version 1.1
 *  =================================================
 *  The contents of this file are subject to the Sun Industry Standards
 *  Source License Version 1.1 ( the "License" ); You may not use this file
 *  except in compliance with the License. You may obtain a copy of the
 *  License at http://www.openoffice.org/license.html.
 *
 *  Software provided under this License is provided on an "AS IS" basis,
 *  WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
 *  WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
 *  MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
 *  See the License for the specific provisions governing your rights and
 *  obligations concerning the Software.
 *
 *  The Initial Developer of the Original Code is: Sun Microsystems, Inc.
 *
 *  Copyright: 2000 by Sun Microsystems, Inc.
 *
 *  All Rights Reserved.
 *
 *  Contributor( s ): _______________________________________
 *
 *
 ************************************************************************/

#ifndef _COM_SUN_STAR_LANG_ILLEGALARGUMENTEXCEPTION_HPP_
#include <com/sun/star/lang/IllegalArgumentException.hpp>
#endif
#ifndef _COM_SUN_STAR_LANG_DISPOSEDEXCEPTION_HPP_
#include <com/sun/star/lang/DisposedException.hpp>
#endif

#ifndef _COM_SUN_STAR_EMBED_WRONGSTATEEXCEPTION_HPP_
#include <com/sun/star/embed/WrongStateException.hpp>
#endif

#ifndef _COM_SUN_STAR_UCB_XSIMPLEFILEACCESS_HPP_
#include <com/sun/star/ucb/XSimpleFileAccess.hpp>
#endif

#ifndef _COM_SUN_STAR_BEANS_XPROPERTYSET_HPP_
#include <com/sun/star/beans/XPropertySet.hpp>
#endif

#ifndef _COM_SUN_STAR_IO_XTRUNCATE_HPP_
#include <com/sun/star/io/XTruncate.hpp>
#endif


#include <platform.h>

#include <cppuhelper/interfacecontainer.h>
#include <osl/file.hxx>

#include "olecomponent.hxx"
#include "olewrapclient.hxx"
#include "advisesink.hxx"
#include "oleembobj.hxx"

using namespace ::com::sun::star;

#define     MAX_ENUM_ELE     20
const sal_Int32 n_ConstBufferSize = 32000;

sal_Bool ConvertBufferForFlavor( void* pBuf,
                                 sal_uInt32 nBufSize,
                                 const datatransfer::DataFlavor& aFlavor,
                                 uno::Any& aResult );

//----------------------------------------------
DWORD GetAspectFromFlavor( const datatransfer::DataFlavor& aFlavor )
{
    if ( aFlavor.MimeType.indexOf( ::rtl::OUString::createFromAscii( ";Aspect=THUMBNAIL" ) ) != -1 )
        return DVASPECT_THUMBNAIL;
    else if ( aFlavor.MimeType.indexOf( ::rtl::OUString::createFromAscii( ";Aspect=ICON" ) ) != -1 )
        return DVASPECT_ICON;
    else if ( aFlavor.MimeType.indexOf( ::rtl::OUString::createFromAscii( ";Aspect=DOCPRINT" ) ) != -1 )
        return DVASPECT_DOCPRINT;
    else
        return DVASPECT_CONTENT;
}

//----------------------------------------------
uno::Sequence< sal_Int8 > GetSequenceClassID( sal_uInt32 n1, sal_uInt16 n2, sal_uInt16 n3,
                                                sal_uInt8 b8, sal_uInt8 b9, sal_uInt8 b10, sal_uInt8 b11,
                                                sal_uInt8 b12, sal_uInt8 b13, sal_uInt8 b14, sal_uInt8 b15 )
{
    // TODO: must be removed and used from another library

    uno::Sequence< sal_Int8 > aResult( 16 );
    aResult[0] = n1 >> 24;
    aResult[1] = ( n1 << 8 ) >> 24;
    aResult[2] = ( n1 << 16 ) >> 24;
    aResult[3] = ( n1 << 24 ) >> 24;
    aResult[4] = n2 >> 8;
    aResult[5] = ( n2 << 8 ) >> 8;
    aResult[6] = n3 >> 8;
    aResult[7] = ( n3 << 8 ) >> 8;
    aResult[8] = b8;
    aResult[9] = b9;
    aResult[10] = b10;
    aResult[11] = b11;
    aResult[12] = b12;
    aResult[13] = b13;
    aResult[14] = b14;
    aResult[15] = b15;

    return aResult;
}

//----------------------------------------------
sal_Bool ConvertDataForFlavor( const STGMEDIUM& aMedium, const datatransfer::DataFlavor& aFlavor, uno::Any& aResult )
{
    sal_Bool bAnyIsReady = sal_False;

    // try to convert data from Medium format to specified Flavor format
    if ( aFlavor.DataType == getCppuType( ( const uno::Sequence< sal_Int8 >* ) 0 ) )
    {
        // first the GDI-metafile must be generated

        unsigned char* pBuf = NULL;
        sal_uInt32 nBufSize = 0;

        if ( aMedium.tymed == TYMED_MFPICT ) // Win Metafile
        {
            METAFILEPICT* pMF = ( METAFILEPICT* )GlobalLock( aMedium.hMetaFilePict );
            if ( pMF )
            {
                // TODO: probably in future mapmode must be used in conversion
                nBufSize = GetMetaFileBitsEx( pMF->hMF, 0, NULL );
                pBuf = new unsigned char[nBufSize+22];
                *( (long* )pBuf ) = 0x9ac6cdd7L;
                *( (short* )( pBuf+6 )) = ( SHORT ) 0;
                *( (short* )( pBuf+8 )) = ( SHORT ) 0;
                *( (short* )( pBuf+10 )) = ( SHORT ) pMF->xExt;
                *( (short* )( pBuf+12 )) = ( SHORT ) pMF->yExt;
                *( (short* )( pBuf+14 )) = ( USHORT ) 2540;

                if ( nBufSize && nBufSize == GetMetaFileBitsEx( pMF->hMF, nBufSize, pBuf+22 ) )
                {
                      if ( aFlavor.MimeType.matchAsciiL( "application/x-openoffice;windows_formatname=\"Image WMF\"", 57 ) )
                    {
                        aResult <<= uno::Sequence< sal_Int8 >( ( sal_Int8* )pBuf, nBufSize + 22 );
                        bAnyIsReady = sal_True;
                    }
                }

                nBufSize += 22;
                GlobalUnlock( aMedium.hMetaFilePict );
            }
        }
        else if ( aMedium.tymed == TYMED_ENHMF ) // Enh Metafile
        {
            nBufSize = GetEnhMetaFileBits( aMedium.hEnhMetaFile, 0, NULL );
            pBuf = new unsigned char[nBufSize];
            if ( nBufSize && nBufSize == GetEnhMetaFileBits( aMedium.hEnhMetaFile, nBufSize, pBuf ) )
            {
                  if ( aFlavor.MimeType.matchAsciiL( "application/x-openoffice;windows_formatname=\"Image EMF\"", 57 ) )
                {
                    aResult <<= uno::Sequence< sal_Int8 >( ( sal_Int8* )pBuf, nBufSize );
                    bAnyIsReady = sal_True;
                }
            }
        }
        else if ( aMedium.tymed == TYMED_GDI ) // Bitmap
        {
            nBufSize = GetBitmapBits( aMedium.hBitmap, 0, NULL );
            pBuf = new unsigned char[nBufSize];
            if ( nBufSize && nBufSize == GetBitmapBits( aMedium.hBitmap, nBufSize, pBuf ) )
            {
                  if ( aFlavor.MimeType.matchAsciiL( "application/x-openoffice;windows_formatname=\"Bitmap\"", 54 ) )
                {
                    aResult <<= uno::Sequence< sal_Int8 >( ( sal_Int8* )pBuf, nBufSize );
                    bAnyIsReady = sal_True;
                }
            }
        }

        if ( pBuf && !bAnyIsReady )
            bAnyIsReady = ConvertBufferForFlavor( ( void* )pBuf, nBufSize, aFlavor, aResult );

        delete[] pBuf;
    }

    return bAnyIsReady;
}

//----------------------------------------------
sal_Bool GraphicalFlavor( const datatransfer::DataFlavor& aFlavor )
{
    // Actually all the required graphical formats must be supported

    if ( aFlavor.DataType == getCppuType( ( const uno::Sequence< sal_Int8 >* ) 0 ) )
    {
        // TODO: extend support for graphical formats
        if ( aFlavor.MimeType.matchAsciiL( "application/x-openoffice;windows_formatname=\"GDIMetaFile\"", 59 )
          || aFlavor.MimeType.matchAsciiL( "application/x-openoffice;windows_formatname=\"Image EMF\"", 57 )
          || aFlavor.MimeType.matchAsciiL( "application/x-openoffice;windows_formatname=\"Image WMF\"", 57 )
          || aFlavor.MimeType.matchAsciiL( "image/png", 9 ) )
            return sal_True;
    }

    return sal_False;
}

//-----------------------------------------------
// TODO: probably later such a common function can be moved
//       to a separate helper library.
void copyInputToOutput_Impl( const uno::Reference< io::XInputStream >& aIn,
                             const uno::Reference< io::XOutputStream >& aOut )
{
    sal_Int32 nRead;
    uno::Sequence < sal_Int8 > aSequence ( n_ConstBufferSize );

    do
    {
        nRead = aIn->readBytes ( aSequence, n_ConstBufferSize );
        if ( nRead < n_ConstBufferSize )
        {
            uno::Sequence < sal_Int8 > aTempBuf ( aSequence.getConstArray(), nRead );
            aOut->writeBytes ( aTempBuf );
        }
        else
            aOut->writeBytes ( aSequence );
    }
    while ( nRead == n_ConstBufferSize );
}

//-----------------------------------------------
sal_Bool KillFile( const ::rtl::OUString& aURL, const uno::Reference< lang::XMultiServiceFactory >& xFactory )
{
    if ( !xFactory.is() )
        return sal_False;

    sal_Bool bRet = sal_False;

    try
    {
        uno::Reference < ucb::XSimpleFileAccess > xAccess(
                xFactory->createInstance (
                        ::rtl::OUString::createFromAscii( "com.sun.star.ucb.SimpleFileAccess" ) ),
                uno::UNO_QUERY );

        if ( xAccess.is() )
        {
            xAccess->kill( aURL );
            bRet = sal_True;
        }
    }
    catch( uno::Exception& )
    {
    }

    return bRet;
}

//----------------------------------------------
::rtl::OUString GetNewTempFileURL( const uno::Reference< lang::XMultiServiceFactory >& xFactory )
{
    OSL_ENSURE( xFactory.is(), "No factory is provided!\n" );

    ::rtl::OUString aResult;

    uno::Reference < beans::XPropertySet > xTempFile(
            xFactory->createInstance( ::rtl::OUString::createFromAscii( "com.sun.star.io.TempFile" ) ),
            uno::UNO_QUERY );

    if ( !xTempFile.is() )
        throw uno::RuntimeException(); // TODO

    try {
        xTempFile->setPropertyValue( ::rtl::OUString::createFromAscii( "RemoveFile" ), uno::makeAny( sal_False ) );
        uno::Any aUrl = xTempFile->getPropertyValue( ::rtl::OUString::createFromAscii( "Uri" ) );
        aUrl >>= aResult;
    }
    catch ( uno::Exception& )
    {
    }

    if ( !aResult.getLength() )
        throw uno::RuntimeException(); // TODO: can not create tempfile

    return aResult;
}

//-----------------------------------------------
::rtl::OUString GetNewFilledTempFile( const uno::Reference< io::XInputStream >& xInStream,
                                      const uno::Reference< lang::XMultiServiceFactory >& xFactory )
        throw( io::IOException )
{
    OSL_ENSURE( xInStream.is() && xFactory.is(), "Wrong parameters are provided!\n" );

    ::rtl::OUString aResult = GetNewTempFileURL( xFactory );

    if ( aResult )
    {
        try {
            uno::Reference < ucb::XSimpleFileAccess > xTempAccess(
                            xFactory->createInstance (
                                    ::rtl::OUString::createFromAscii( "com.sun.star.ucb.SimpleFileAccess" ) ),
                            uno::UNO_QUERY );

            if ( !xTempAccess.is() )
                throw uno::RuntimeException(); // TODO:

            uno::Reference< io::XOutputStream > xTempOutStream = xTempAccess->openFileWrite( aResult );
            if ( xTempOutStream.is() )
            {
                // copy stream contents to the file
                copyInputToOutput_Impl( xInStream, xTempOutStream );
                xTempOutStream->closeOutput();
                xTempOutStream = uno::Reference< io::XOutputStream >();
            }
            else
                throw io::IOException(); // TODO:
        }
        catch( packages::WrongPasswordException& )
        {
               KillFile( aResult, xFactory );
            throw io::IOException(); //TODO:
        }
        catch( io::IOException& )
        {
               KillFile( aResult, xFactory );
            throw;
        }
        catch( uno::RuntimeException& )
        {
               KillFile( aResult, xFactory );
            throw;
        }
        catch( uno::Exception& )
        {
               KillFile( aResult, xFactory );
            aResult = ::rtl::OUString();
        }
    }

    return aResult;
}

//----------------------------------------------
sal_Bool GetClassIDFromSequence( uno::Sequence< sal_Int8 > aSeq, CLSID& aResult )
{
    if ( aSeq.getLength() == 16 )
    {
        aResult.Data1 = ( ( ( ( ( ( sal_uInt8 )aSeq[0] << 8 ) + ( sal_uInt8 )aSeq[1] ) << 8 ) + ( sal_uInt8 )aSeq[2] ) << 8 ) + ( sal_uInt8 )aSeq[3];
        aResult.Data2 = ( ( sal_uInt8 )aSeq[4] << 8 ) + ( sal_uInt8 )aSeq[5];
        aResult.Data3 = ( ( sal_uInt8 )aSeq[6] << 8 ) + ( sal_uInt8 )aSeq[7];
        for( int nInd = 0; nInd < 8; nInd++ )
            aResult.Data4[nInd] = ( sal_uInt8 )aSeq[nInd+8];

        return sal_True;
    }

    return sal_False;
}

//----------------------------------------------
::rtl::OUString WinAccToVcl( const sal_Unicode* pStr )
{
    ::rtl::OUString aResult;

    if( pStr )
    {
        while ( *pStr )
        {
            if ( *pStr == '&' )
            {
                aResult += ::rtl::OUString::createFromAscii( "~" );
                while( *( ++pStr ) == '&' );
            }
            else
            {
                aResult += ::rtl::OUString( pStr, 1 );
                pStr++;
            }
        }
    }

    return aResult;
}

//----------------------------------------------
OleComponent::OleComponent( const uno::Reference< lang::XMultiServiceFactory >& xFactory, OleEmbeddedObject* pUnoOleObject )
: m_pInterfaceContainer( NULL )
, m_bDisposed( sal_False )
, m_xFactory( xFactory )
, m_pOleWrapClientSite( NULL )
, m_pImplAdviseSink( NULL )
, m_pUnoOleObject( pUnoOleObject )
, m_nOLEMiscFlags( 0 )
, m_nAdvConn( 0 )
, m_nSupportedFormat( 0 )
, m_nSupportedMedium( 0 )
, m_bOleInitialized( sal_False )
{
    OSL_ENSURE( m_pUnoOleObject, "No owner object is provided!" );

    HRESULT hr = OleInitialize( NULL );
    OSL_ENSURE( hr == S_OK || hr == S_FALSE, "The ole can not be successfuly initialized\n" );
    if ( hr == S_OK || hr == S_FALSE )
        m_bOleInitialized = sal_True;

    m_pOleWrapClientSite = new OleWrapperClientSite( ( OleComponent* )this );
    m_pOleWrapClientSite->AddRef();

    m_pImplAdviseSink = new OleWrapperAdviseSink( ( OleComponent* )this );
    m_pImplAdviseSink->AddRef();
}

//----------------------------------------------
OleComponent::~OleComponent()
{
    OSL_ENSURE( !m_pOleWrapClientSite && !m_pImplAdviseSink && !m_pInterfaceContainer && !m_bOleInitialized,
                "The object was not closed successfully! DISASTER is possible!" );

    if ( m_pOleWrapClientSite || m_pImplAdviseSink || m_pInterfaceContainer || m_bOleInitialized )
    {
        m_refCount++;
        try {
            Dispose();
        } catch( uno::Exception& ) {}
    }

    // TODO: free m_hIconHandle
}

//----------------------------------------------
void OleComponent::Dispose()
{
    if ( m_pOleWrapClientSite )
    {
        m_pOleWrapClientSite->disconnectOleComponent();
        m_pOleWrapClientSite->Release();
        m_pOleWrapClientSite = NULL;
    }

    if ( m_pImplAdviseSink )
    {
        m_pImplAdviseSink->disconnectOleComponent();
        m_pImplAdviseSink->Release();
        m_pImplAdviseSink = NULL;
    }

    if ( m_pInterfaceContainer )
    {
        lang::EventObject aEvent( ( embed::XEmbeddedObject* )this );
        m_pInterfaceContainer->disposeAndClear( aEvent );

        delete m_pInterfaceContainer;
        m_pInterfaceContainer = NULL;
    }

    if ( m_bOleInitialized )
    {
        OleUninitialize();
        m_bOleInitialized = sal_False;
    }

    m_bDisposed = sal_True;
}

//----------------------------------------------
void OleComponent::disconnectEmbeddedObject()
{
    // must not be called from destructor of UNO OLE object!!!
    osl::MutexGuard aGuard( m_aMutex );
    m_pUnoOleObject = NULL;
}

//----------------------------------------------
CComPtr< IStorage > OleComponent::CreateIStorageOnXInputStream_Impl( const uno::Reference< io::XInputStream >& xInStream )
{
    // TODO: in future a global memory should be used instead of file.

    OSL_ENSURE( !m_aTempURL.getLength(), "The object already has temporary representation!\n" );

    // write the stream to the temporary file
    m_aTempURL = GetNewFilledTempFile( xInStream, m_xFactory );
    if ( !m_aTempURL.getLength() )
        throw uno::RuntimeException(); // TODO

    // open an IStorage based on the temporary file
    ::rtl::OUString aTempFilePath;
    if ( ::osl::FileBase::getSystemPathFromFileURL( m_aTempURL, aTempFilePath ) != ::osl::FileBase::E_None )
        throw uno::RuntimeException(); // TODO: something dangerous happend

    // TODO: remove temporary file when not needed any more
    HRESULT hr = StgOpenStorage( aTempFilePath,
                                 NULL,
                                 STGM_READWRITE | STGM_TRANSACTED, // | STGM_DELETEONRELEASE,
                                 NULL,
                                 0,
                                 &m_pIStorage );

    if ( FAILED( hr ) || !m_pIStorage )
        throw io::IOException(); // TODO: transport error code?

    return m_pIStorage;
}

//----------------------------------------------
CComPtr< IStorage > OleComponent::CreateNewIStorage_Impl()
{
    // TODO: in future a global memory should be used instead of file.

    OSL_ENSURE( !m_aTempURL.getLength(), "The object already has temporary representation!\n" );

    // write the stream to the temporary file
    m_aTempURL = GetNewTempFileURL( m_xFactory );
    if ( !m_aTempURL.getLength() )
        throw uno::RuntimeException(); // TODO

    // open an IStorage based on the temporary file
    ::rtl::OUString aTempFilePath;
    if ( ::osl::FileBase::getSystemPathFromFileURL( m_aTempURL, aTempFilePath ) != ::osl::FileBase::E_None )
        throw uno::RuntimeException(); // TODO: something dangerous happend

    HRESULT hr = StgCreateDocfile( aTempFilePath, STGM_CREATE | STGM_READWRITE | STGM_TRANSACTED | STGM_DELETEONRELEASE, 0, &m_pIStorage );
    if ( FAILED( hr ) || !m_pIStorage )
        throw io::IOException(); // TODO: transport error code?

    return m_pIStorage;
}

//----------------------------------------------
void OleComponent::RetrieveObjectDataFlavors_Impl()
{
    if ( !m_pOleObject )
        throw embed::WrongStateException(); // TODO: the object is in wrong state

/*
    if ( !m_aDataFlavors.getLength() )
    {
        CComPtr< IDataObject > pDataObject;
        HRESULT hr = m_pObj->QueryInterface( IID_IDataObject, (void**)&pDataObject );
        if ( FAILED( hr ) || !pDataObject )
            throw io::IOException(); // TODO: transport error code

        CComPtr< IEnumFORMATETC > pFormatEnum;
        hr = pDataObject->EnumFormatEtc( DATADIR_GET, &pFormatEnum );
        if ( FAILED( hr ) || !pFormatEnum )
            throw io::IOException(); // TODO: transport error code

        FORMATETC pElem[ MAX_ENUM_ELE ];
        ULONG nNum = 0;

        do
        {
            HRESULT hr = pFormatEnum->Next( MAX_ENUM_ELE, pElem, &nNum );
            if( hr == S_OK || hr == S_FALSE )
            {
                for( sal_uInt32 nInd = 0; nInd < nNum; nInd++ )
                {
                    //TODO: add OOo format reachable from specified OLE format to the list
                }
            }
            else
                break;
        }
        while( nNum == MAX_ENUM_ELE );
    }
*/
}

//----------------------------------------------
sal_Bool OleComponent::InitializeObject_Impl()
// There will be no static objects!
{
    if ( !m_pObj )
        return sal_False;

    // the linked object will be detected here
    CComPtr< IOleLink > pOleLink;
    HRESULT hr = m_pObj->QueryInterface( IID_IOleLink, (void**)&pOleLink );
    m_pUnoOleObject->SetObjectIsLink_Impl( pOleLink != NULL );


    hr = m_pObj->QueryInterface( IID_IViewObject2, (void**)&m_pViewObject2 );
    if ( FAILED( hr ) || !m_pViewObject2 )
        return sal_False;

    // not realy needed for now, since object is updated on saving
    // m_pViewObject2->SetAdvise( DVASPECT_CONTENT, 0, m_pImplAdviseSink );

    // remove all the caches and register own specific one
    IOleCache* pIOleCache = NULL;
    if ( SUCCEEDED( m_pObj->QueryInterface( IID_IOleCache, (void**)&pIOleCache ) ) && pIOleCache )
    {
        IEnumSTATDATA* pEnumSD = NULL;
        HRESULT hr = pIOleCache->EnumCache( &pEnumSD );

        if ( SUCCEEDED( hr ) && pEnumSD )
        {
            pEnumSD->Reset();
            STATDATA aSD;
            DWORD nNum;
            while( SUCCEEDED( pEnumSD->Next( 1, &aSD, &nNum ) ) && nNum == 1 )
                hr = pIOleCache->Uncache( aSD.dwConnection );
        }

        DWORD nConn;
        FORMATETC aFormat = { 0, 0, DVASPECT_CONTENT, -1, TYMED_MFPICT };
        hr = pIOleCache->Cache( &aFormat, ADVFCACHE_ONSAVE, &nConn );

        pIOleCache->Release();
        pIOleCache = NULL;
    }

    hr = m_pObj->QueryInterface( IID_IOleObject, (void**)&m_pOleObject );
    if ( FAILED( hr ) || !m_pOleObject )
        return sal_False; // Static objects are not supported, they should be inserted as graphics

    m_pOleObject->GetMiscStatus( DVASPECT_CONTENT, ( DWORD* )&m_nOLEMiscFlags );
    // TODO: use other misc flags also
    // the object should have drawable aspect even in case it supports only iconic representation
    // if ( m_nOLEMiscFlags & OLEMISC_ONLYICONIC )

    m_pOleObject->SetClientSite( m_pOleWrapClientSite );

    // the only need in this registration is workaround for close notification
    m_pOleObject->Advise( m_pImplAdviseSink, ( DWORD* )&m_nAdvConn );

    OleSetContainedObject( m_pOleObject, TRUE );

    return sal_True;
}

//----------------------------------------------
void OleComponent::LoadEmbeddedObject( const uno::Reference< io::XInputStream >& xInStream )
{
    if ( !xInStream.is() )
        throw lang::IllegalArgumentException(); // TODO

    if ( m_pIStorage || m_aTempURL.getLength() )
        throw io::IOException(); // TODO the object is already initialized

    m_pIStorage = CreateIStorageOnXInputStream_Impl( xInStream );
    if ( !m_pIStorage )
        throw uno::RuntimeException(); // TODO:

    HRESULT hr = OleLoad( m_pIStorage, IID_IUnknown, NULL, (void**)&m_pObj );
    if ( FAILED( hr ) || !m_pObj )
    {
        // STATSTG aStat;
        // m_pIStorage->Stat( &aStat, STATFLAG_NONAME );
        throw uno::RuntimeException();
    }

    if ( !InitializeObject_Impl() )
        throw uno::RuntimeException(); // TODO
}

//----------------------------------------------
void OleComponent::CreateNewEmbeddedObject( const uno::Sequence< sal_Int8 >& aSeqCLSID )
{
    CLSID aClsID;

    if ( !GetClassIDFromSequence( aSeqCLSID, aClsID ) )
        throw lang::IllegalArgumentException(); // TODO

    if ( m_pIStorage || m_aTempURL.getLength() )
        throw io::IOException(); // TODO:the object is already initialized

    m_pIStorage = CreateNewIStorage_Impl();
    if ( !m_pIStorage )
        throw uno::RuntimeException(); // TODO

    // FORMATETC aFormat = { CF_METAFILEPICT, NULL, nAspect, -1, TYMED_MFPICT }; // for OLE..._DRAW should be NULL

    HRESULT hr = OleCreate( aClsID,
                            IID_IUnknown,
                            OLERENDER_DRAW, // OLERENDER_FORMAT
                            NULL,           // &aFormat,
                            NULL,
                            m_pIStorage,
                            (void**)&m_pObj );

    if ( FAILED( hr ) || !m_pObj )
        throw uno::RuntimeException(); // TODO

    if ( !InitializeObject_Impl() )
        throw uno::RuntimeException(); // TODO

    // TODO: getExtent???
}

//----------------------------------------------
void OleComponent::CreateObjectFromData( const uno::Reference< datatransfer::XTransferable >& xTransfer )
// Static objects are not supported, they should be inserted as graphics
{
    // TODO: May be this call is useless since there are no static objects
    //       and nonstatic objects will be created based on OLEstorage ( stream ).
    //       ???

    // OleQueryCreateFromData...
}

//----------------------------------------------
void OleComponent::CreateObjectFromFile( const ::rtl::OUString& aFileURL )
{
    if ( m_pIStorage || m_aTempURL.getLength() )
        throw io::IOException(); // TODO:the object is already initialized

    m_pIStorage = CreateNewIStorage_Impl();
    if ( !m_pIStorage )
        throw uno::RuntimeException(); // TODO:

    ::rtl::OUString aFilePath;
    if ( ::osl::FileBase::getSystemPathFromFileURL( aFileURL, aFilePath ) != ::osl::FileBase::E_None )
        throw uno::RuntimeException(); // TODO: something dangerous happend

    HRESULT hr = OleCreateFromFile( CLSID_NULL,
                                    aFilePath.getStr(),
                                    IID_IUnknown,
                                    OLERENDER_DRAW, // OLERENDER_FORMAT
                                    NULL,
                                    NULL,
                                    m_pIStorage,
                                    (void**)&m_pObj );

    if ( FAILED( hr ) || !m_pObj )
        throw uno::RuntimeException(); // TODO

    if ( !InitializeObject_Impl() )
        throw uno::RuntimeException(); // TODO
}

//----------------------------------------------
void OleComponent::CreateLinkFromFile( const ::rtl::OUString& aFileURL )
{
    if ( m_pIStorage || m_aTempURL.getLength() )
        throw io::IOException(); // TODO:the object is already initialized

    m_pIStorage = CreateNewIStorage_Impl();
    if ( !m_pIStorage )
        throw uno::RuntimeException(); // TODO:

    ::rtl::OUString aFilePath;
    if ( ::osl::FileBase::getSystemPathFromFileURL( aFileURL, aFilePath ) != ::osl::FileBase::E_None )
        throw uno::RuntimeException(); // TODO: something dangerous happend

    HRESULT hr = OleCreateLinkToFile( aFilePath.getStr(),
                                        IID_IUnknown,
                                        OLERENDER_DRAW, // OLERENDER_FORMAT
                                        NULL,
                                        NULL,
                                        m_pIStorage,
                                        (void**)&m_pObj );

    if ( FAILED( hr ) || !m_pObj )
        throw uno::RuntimeException(); // TODO

    if ( !InitializeObject_Impl() )
        throw uno::RuntimeException(); // TODO
}

//----------------------------------------------
void OleComponent::InitEmbeddedCopyOfLink( OleComponent* pOleLinkComponent )
{
    if ( !pOleLinkComponent || !pOleLinkComponent->m_pObj )
        throw lang::IllegalArgumentException(); // TODO

    if ( m_pIStorage || m_aTempURL.getLength() )
        throw io::IOException(); // TODO:the object is already initialized

    CComPtr< IDataObject > pDataObject;
    HRESULT hr = pOleLinkComponent->m_pObj->QueryInterface( IID_IDataObject, (void**)&pDataObject );
    if ( SUCCEEDED( hr ) && pDataObject && SUCCEEDED( OleQueryCreateFromData( pDataObject ) ) )
    {
        m_pIStorage = CreateNewIStorage_Impl();
        if ( !m_pIStorage )
            throw uno::RuntimeException(); // TODO:

        hr = OleCreateFromData( pDataObject,
                                IID_IUnknown,
                                OLERENDER_DRAW,
                                NULL,
                                NULL,
                                m_pIStorage,
                                (void**)&m_pObj );
    }

    if ( !m_pObj )
    {
        CComPtr< IOleLink > pOleLink;
        hr = pOleLinkComponent->m_pObj->QueryInterface( IID_IOleLink, (void**)&pOleLink );
        if ( FAILED( hr ) || !pOleLink )
            throw io::IOException(); // TODO: the object doesn't support IOleLink

        CComPtr< IMoniker > pMoniker;
        hr = pOleLink->GetSourceMoniker( &pMoniker );
        if ( FAILED( hr ) || !pMoniker )
            throw io::IOException(); // TODO: can not retrieve moniker

        // In case of file moniker life is easy : )
        DWORD aMonType = 0;
        hr = pMoniker->IsSystemMoniker( &aMonType );
        if ( SUCCEEDED( hr ) && aMonType == MKSYS_FILEMONIKER )
        {
            CComPtr< IMalloc > pMalloc;
            CoGetMalloc( 1, &pMalloc ); // if fails there will be a memory leak
            OSL_ENSURE( pMalloc, "CoGetMalloc() failed!" );

            LPOLESTR pOleStr = NULL;
            hr = pOleLink->GetSourceDisplayName( &pOleStr );
            if ( SUCCEEDED( hr ) && pOleStr )
            {
                ::rtl::OUString aFilePath( ( sal_Unicode* )pOleStr );
                if ( pMalloc )
                    pMalloc->Free( ( void* )pOleStr );

                hr = OleCreateFromFile( CLSID_NULL,
                                        aFilePath.getStr(),
                                        IID_IUnknown,
                                        OLERENDER_DRAW, // OLERENDER_FORMAT
                                        NULL,
                                        NULL,
                                        m_pIStorage,
                                        (void**)&m_pObj );
            }
        }

        // in case of other moniker types the only way is to get storage
        if ( !m_pObj )
        {
            CComPtr< IBindCtx > pBindCtx;
            hr = CreateBindCtx( 0, ( LPBC FAR* )&pBindCtx );
            if ( SUCCEEDED( hr ) && pBindCtx )
            {
                CComPtr< IStorage > pObjectStorage;
                hr = pMoniker->BindToStorage( pBindCtx, NULL, IID_IStorage, (void**)&pObjectStorage );
                if ( SUCCEEDED( hr ) && pObjectStorage )
                {
                    hr = pObjectStorage->CopyTo( 0, NULL, NULL, m_pIStorage );
                    if ( SUCCEEDED( hr ) )
                        hr = OleLoad( m_pIStorage, IID_IUnknown, NULL, (void**)&m_pObj );
                }
            }
        }
    }

    // If object could not be created the only way is to use graphical representation
    if ( FAILED( hr ) || !m_pObj )
        throw uno::RuntimeException(); // TODO

    if ( !InitializeObject_Impl() )
        throw uno::RuntimeException(); // TODO
}

//----------------------------------------------
void OleComponent::RunObject()
{
    if ( !m_pOleObject )
        throw embed::WrongStateException(); // TODO: the object is in wrong state

    if ( !OleIsRunning( m_pOleObject ) )
    {
        HRESULT hr = OleRun( m_pObj );
        if ( FAILED( hr ) )
            throw io::IOException();
    }
}

//----------------------------------------------
void OleComponent::CloseObject()
{
    if ( !m_pOleObject )
        throw embed::WrongStateException(); // TODO: the object is in wrong state

    if ( OleIsRunning( m_pOleObject ) )
        m_pOleObject->Close( OLECLOSE_NOSAVE ); // must be saved before
}

//----------------------------------------------
uno::Sequence< embed::VerbDescr > OleComponent::GetVerbList()
{
    if ( !m_pOleObject )
        throw embed::WrongStateException(); // TODO: the object is in wrong state

    if( !m_aVerbList.getLength() )
    {
        CComPtr< IEnumOLEVERB > pEnum;
        if( SUCCEEDED( m_pOleObject->EnumVerbs( &pEnum ) ) )
        {
            OLEVERB     szEle[ MAX_ENUM_ELE ];
            ULONG       nNum = 0;
            sal_Int32   nSeqSize = 0;

            do
            {
                HRESULT hr = pEnum->Next( MAX_ENUM_ELE, szEle, &nNum );
                if( hr == S_OK || hr == S_FALSE )
                {
                    m_aVerbList.realloc( nSeqSize += nNum );
                    for( sal_uInt32 nInd = 0; nInd < nNum; nInd++ )
                    {
                        m_aVerbList[nSeqSize-nNum+nInd].VerbID = szEle[ nInd ].lVerb;
                        m_aVerbList[nSeqSize-nNum+nInd].VerbName = WinAccToVcl( szEle[ nInd ].lpszVerbName );
                        m_aVerbList[nSeqSize-nNum+nInd].VerbFlags = szEle[ nInd ].fuFlags;
                        m_aVerbList[nSeqSize-nNum+nInd].VerbAttributes = szEle[ nInd ].grfAttribs;
                    }
                }
                else
                    break;
            }
            while( nNum == MAX_ENUM_ELE );
        }
    }

    return m_aVerbList;
}

//----------------------------------------------
void OleComponent::ExecuteVerb( sal_Int32 nVerbID )
{
    if ( !m_pOleObject )
        throw embed::WrongStateException(); // TODO

    HRESULT hr = OleRun( m_pOleObject );
    if ( FAILED( hr ) )
        throw io::IOException(); // TODO: a specific exception that transport error code can be thrown here

    // TODO: probably extents should be set here and stored in aRect
    // TODO: probably the parent window also should be set
    hr = m_pOleObject->DoVerb( nVerbID, NULL, m_pOleWrapClientSite, 0, NULL, NULL );

    if ( FAILED( hr ) )
        throw io::IOException(); // TODO
}

//----------------------------------------------
void OleComponent::SetHostName( const ::rtl::OUString& aContName,
                                const ::rtl::OUString& aEmbDocName )
{
    if ( !m_pOleObject )
        throw embed::WrongStateException(); // TODO: the object is in wrong state

    // TODO: use aContName and aEmbDocName in m_pOleObject->SetHostNames()
}

//----------------------------------------------
void OleComponent::SetExtent( const awt::Size& aVisAreaSize, sal_Int64 nAspect )
{
    if ( !m_pOleObject )
        throw embed::WrongStateException(); // TODO: the object is in wrong state

    DWORD nMSAspect = ( DWORD )nAspect; // first 32 bits are for MS aspects

    SIZEL aSize = { aVisAreaSize.Width, aVisAreaSize.Height };
    HRESULT hr = m_pOleObject->SetExtent( nMSAspect, &aSize );

    if ( FAILED( hr ) )
        throw io::IOException(); // TODO
}

//----------------------------------------------
awt::Size OleComponent::GetExtent( sal_Int64 nAspect )
{
    if ( !m_pOleObject )
        throw embed::WrongStateException(); // TODO: the object is in wrong state

    DWORD nMSAspect = ( DWORD )nAspect; // first 32 bits are for MS aspects
    SIZEL aSize;
    HRESULT hr = m_pOleObject->GetExtent( nMSAspect, &aSize );

    if ( FAILED( hr ) )
        throw io::IOException(); // TODO

    return awt::Size( aSize.cx, aSize.cy );
}

//----------------------------------------------
sal_Int64 OleComponent::GetMiscStatus( sal_Int64 nAspect )
{
    if ( !m_pOleObject )
        throw embed::WrongStateException(); // TODO: the object is in wrong state

    sal_uInt32 nResult;
    m_pOleObject->GetMiscStatus( ( DWORD )nAspect, ( DWORD* )&nResult );
    return ( sal_Int64 )nResult; // first 32 bits are for MS flags
}

//----------------------------------------------
uno::Sequence< sal_Int8 > OleComponent::GetCLSID()
{
    if ( !m_pOleObject )
        throw embed::WrongStateException(); // TODO: the object is in wrong state

    GUID aCLSID;
    HRESULT hr = m_pOleObject->GetUserClassID( &aCLSID );
    if ( FAILED( hr ) )
        throw io::IOException(); // TODO:

    return  GetSequenceClassID( aCLSID.Data1, aCLSID.Data2, aCLSID.Data3,
                                aCLSID.Data4[0], aCLSID.Data4[1],
                                aCLSID.Data4[2], aCLSID.Data4[3],
                                aCLSID.Data4[4], aCLSID.Data4[5],
                                aCLSID.Data4[6], aCLSID.Data4[7] );
}

//----------------------------------------------
void OleComponent::StoreObjectToStream( uno::Reference< io::XOutputStream > xOutStream, sal_Bool bStoreVisReplace )
{
    if ( !m_pOleObject )
        throw embed::WrongStateException(); // TODO: the object is in wrong state

    CComPtr< IPersistStorage > pPersistStorage;
    HRESULT hr = m_pObj->QueryInterface( IID_IPersistStorage, (void**)&pPersistStorage );
    if ( FAILED( hr ) || !pPersistStorage )
        throw io::IOException(); // TODO

    hr = OleSave( pPersistStorage, m_pIStorage, TRUE );
    if ( FAILED( hr ) )
        throw io::IOException(); // TODO

    hr = pPersistStorage->SaveCompleted( NULL );
    if ( FAILED( hr ) )
        throw io::IOException(); // TODO

    if ( !bStoreVisReplace )
    {
        // remove all the cache streams from the storage
        for ( sal_uInt8 nInd = 0; nInd < 10; nInd++ )
        {
            ::rtl::OUString aStreamName = ::rtl::OUString::createFromAscii( "\002OlePres00" );
            aStreamName += ::rtl::OUString::valueOf( (sal_Int32)nInd );
            hr = m_pIStorage->DestroyElement( aStreamName.getStr() );
            if ( FAILED( hr ) )
                break;
        }
    }

    hr = m_pIStorage->Commit( STGC_DEFAULT );
    if ( FAILED( hr ) )
        throw io::IOException(); // TODO

    // STATSTG aStat;
    // m_pIStorage->Stat( &aStat, STATFLAG_NONAME );

    // now all the changes should be in temporary location

    // open temporary file for reading
    uno::Reference < ucb::XSimpleFileAccess > xTempAccess(
                    m_xFactory->createInstance (
                            ::rtl::OUString::createFromAscii( "com.sun.star.ucb.SimpleFileAccess" ) ),
                    uno::UNO_QUERY );

    if ( !xTempAccess.is() )
        throw uno::RuntimeException(); // TODO:

    uno::Reference< io::XInputStream > xTempInStream = xTempAccess->openFileRead( m_aTempURL );
    OSL_ENSURE( xTempInStream.is(), "The object's temporary file can not be reopened for reading!\n" );

    // TODO: use bStoreVisReplace

    if ( xTempInStream.is() )
    {
        // write all the contents to XOutStream
        uno::Reference< io::XTruncate > xTrunc( xOutStream, uno::UNO_QUERY );
        if ( !xTrunc.is() )
            throw uno::RuntimeException(); //TODO:

        xTrunc->truncate();

        copyInputToOutput_Impl( xTempInStream, xOutStream );
    }
    else
        throw io::IOException(); // TODO:

    // TODO: should the view replacement be in the stream ???
    //       probably it must be specified on storing
}

//----------------------------------------------
sal_Bool OleComponent::SaveObject_Impl()
{
    sal_Bool bResult = sal_False;
    OleEmbeddedObject* pLockObject = NULL;

    {
        osl::MutexGuard aGuard( m_aMutex );
        if ( m_pUnoOleObject )
        {
            pLockObject = m_pUnoOleObject;
            pLockObject->acquire();
        }
    }

    if ( pLockObject )
    {
        bResult = pLockObject->SaveObject_Impl();
        pLockObject->release();
    }

    return bResult;
}

//----------------------------------------------
sal_Bool OleComponent::OnShowWindow_Impl( sal_Bool bShow )
{
    sal_Bool bResult = sal_False;
    OleEmbeddedObject* pLockObject = NULL;

    {
        osl::MutexGuard aGuard( m_aMutex );
        if ( m_pUnoOleObject )
        {
            pLockObject = m_pUnoOleObject;
            pLockObject->acquire();
        }
    }

    if ( pLockObject )
    {
        bResult = m_pUnoOleObject->OnShowWindow_Impl( bShow );
        pLockObject->release();
    }

    return bResult;
}

//----------------------------------------------
void OleComponent::OnViewChange_Impl( DWORD dwAspect )
{
    // TODO: make a notification ?
    // TODO: check if it is enough or may be saving notifications are required for Visio2000

    // for now this method will do nothing since the object is updated on saving
}

//----------------------------------------------
sal_Bool OleComponent::GetGraphicalCache_Impl( const datatransfer::DataFlavor& aFlavor, uno::Any& aResult )
{
    sal_Bool bOk = sal_False;
    if ( m_pIStorage )
    {
        // try to retrieve cached representation
        // TODO: in future it must be converted to requested format
        for ( sal_uInt8 nInd = 0; nInd < 10; nInd++ )
        {
            CComPtr< IStream > pGrStream;
            ::rtl::OUString aStreamName = ::rtl::OUString::createFromAscii( "\002OlePres00" );
            aStreamName += ::rtl::OUString::valueOf( nInd );
            HRESULT hr = m_pIStorage->OpenStream( aStreamName.getStr(),
                                                    NULL,
                                                    STGM_READ,
                                                    NULL,
                                                    &pGrStream );
            if ( FAILED( hr ) || !pGrStream )
                break;

            // TODO: check that the format is acceptable
            //       if so - break

            // create XInputStream ( for now SvStream ) with graphical representation
            // try to generate a Metafile or Bitmap from it
            // convert the result representation to requested format
            // if ( succeeded ) ( bOk = sal_True ), break;
        }
    }

    return bOk;
}

// XCloseable
//----------------------------------------------
void SAL_CALL OleComponent::close( sal_Bool bDeliverOwnership )
    throw ( util::CloseVetoException,
            uno::RuntimeException )
{
    ::osl::MutexGuard aGuard( m_aMutex );
    if ( m_bDisposed )
        throw lang::DisposedException(); // TODO

    uno::Reference< uno::XInterface > xSelfHold( static_cast< ::cppu::OWeakObject* >( this ) );
    lang::EventObject aSource( static_cast< ::cppu::OWeakObject* >( this ) );

    if ( m_pInterfaceContainer )
    {
        ::cppu::OInterfaceContainerHelper* pContainer =
            m_pInterfaceContainer->getContainer( ::getCppuType( ( const uno::Reference< util::XCloseListener >* ) NULL ) );
        if ( pContainer != NULL )
        {
            ::cppu::OInterfaceIteratorHelper pIterator( *pContainer );
            while ( pIterator.hasMoreElements() )
            {
                try
                {
                    ( (util::XCloseListener* )pIterator.next() )->queryClosing( aSource, bDeliverOwnership );
                }
                catch( uno::RuntimeException& )
                {
                    pIterator.remove();
                }
            }
        }

        pContainer = m_pInterfaceContainer->getContainer(
                                    ::getCppuType( ( const uno::Reference< util::XCloseListener >* ) NULL ) );
        if ( pContainer != NULL )
        {
            ::cppu::OInterfaceIteratorHelper pCloseIterator( *pContainer );
            while ( pCloseIterator.hasMoreElements() )
            {
                try
                {
                    ( (util::XCloseListener* )pCloseIterator.next() )->notifyClosing( aSource );
                }
                catch( uno::RuntimeException& )
                {
                    pCloseIterator.remove();
                }
            }
        }
    }

    Dispose();
}

//----------------------------------------------
void SAL_CALL OleComponent::addCloseListener( const uno::Reference< util::XCloseListener >& xListener )
    throw ( uno::RuntimeException )
{
    ::osl::MutexGuard aGuard( m_aMutex );
    if ( m_bDisposed )
        throw lang::DisposedException(); // TODO

    if ( !m_pInterfaceContainer )
        m_pInterfaceContainer = new ::cppu::OMultiTypeInterfaceContainerHelper( m_aMutex );

    m_pInterfaceContainer->addInterface( ::getCppuType( ( const uno::Reference< util::XCloseListener >* )0 ), xListener );
}

//----------------------------------------------
void SAL_CALL OleComponent::removeCloseListener( const uno::Reference< util::XCloseListener >& xListener )
    throw ( uno::RuntimeException )
{
    ::osl::MutexGuard aGuard( m_aMutex );
    if ( m_bDisposed )
        throw lang::DisposedException(); // TODO

    if ( m_pInterfaceContainer )
        m_pInterfaceContainer->removeInterface( ::getCppuType( ( const uno::Reference< util::XCloseListener >* )0 ),
                                                xListener );
}

// XTransferable
//----------------------------------------------
uno::Any SAL_CALL OleComponent::getTransferData( const datatransfer::DataFlavor& aFlavor )
    throw ( datatransfer::UnsupportedFlavorException,
            io::IOException,
            uno::RuntimeException )
{
    ::osl::MutexGuard aGuard( m_aMutex );
    if ( m_bDisposed )
        throw lang::DisposedException(); // TODO

    if ( !m_pOleObject )
        throw embed::WrongStateException(); // TODO: the object is in wrong state

    uno::Any aResult;
    sal_Bool bSupportedFlavor = sal_False;

    if ( GraphicalFlavor( aFlavor ) )
    {
        // TODO: move using of cached representation to the end
        // since it represents old version and supports only Content aspect

        // first check if there is a cached representation
        if ( m_pIStorage )
        {
            // try to retrieve cached representation
            bSupportedFlavor = GetGraphicalCache_Impl( aFlavor, aResult );
        }

        DWORD nRequestedAspect = GetAspectFromFlavor( aFlavor );
        // if own icon is set and icon aspect is requested the own icon can be returned directly
        if ( !bSupportedFlavor )
        {
            CComPtr< IDataObject > pDataObject;
            HRESULT hr = m_pObj->QueryInterface( IID_IDataObject, (void**)&pDataObject );
            if ( FAILED( hr ) || !pDataObject )
                throw io::IOException(); // TODO: transport error code

            if ( m_nSupportedFormat )
            {
                FORMATETC aFormatEtc = { m_nSupportedFormat, NULL, nRequestedAspect, -1, m_nSupportedMedium };
                STGMEDIUM aMedium;
                hr = pDataObject->GetData( &aFormatEtc, &aMedium );
                if ( SUCCEEDED( hr ) )
                    bSupportedFlavor = ConvertDataForFlavor( aMedium, aFlavor, aResult );
            }
            else
            {
                // the supported format of the application is still not found, find one
                sal_Int16 nFormats[3] = { CF_ENHMETAFILE, CF_METAFILEPICT, CF_BITMAP };
                sal_Int32 nMediums[3] = { TYMED_ENHMF, TYMED_MFPICT, TYMED_GDI };

                for ( sal_Int32 nInd = 0; nInd < 3; nInd++ )
                {
                    FORMATETC aFormatEtc = { nFormats[nInd], NULL, nRequestedAspect, -1, nMediums[nInd] };
                    STGMEDIUM aMedium;
                    hr = pDataObject->GetData( &aFormatEtc, &aMedium );
                    if ( SUCCEEDED( hr ) )
                    {
                        m_nSupportedFormat = nFormats[nInd];
                        m_nSupportedMedium = nMediums[nInd];

                        bSupportedFlavor = ConvertDataForFlavor( aMedium, aFlavor, aResult );
                        break;
                    }
                }
            }

            if ( !bSupportedFlavor )
            {
                // TODO: implement workaround for stampit
            }
        }
    }
    else
    {
        // TODO: allow to retrieve stream-representation of the object persistence
    }

    if ( !bSupportedFlavor )
        throw datatransfer::UnsupportedFlavorException();

    return aResult;
}

//----------------------------------------------
uno::Sequence< datatransfer::DataFlavor > SAL_CALL OleComponent::getTransferDataFlavors()
    throw ( uno::RuntimeException )
{
    ::osl::MutexGuard aGuard( m_aMutex );
    if ( m_bDisposed )
        throw lang::DisposedException(); // TODO

    if ( !m_pOleObject )
        throw embed::WrongStateException(); // TODO: the object is in wrong state

    RetrieveObjectDataFlavors_Impl();

    return m_aDataFlavors;
}

//----------------------------------------------
sal_Bool SAL_CALL OleComponent::isDataFlavorSupported( const datatransfer::DataFlavor& aFlavor )
    throw ( uno::RuntimeException )
{
    ::osl::MutexGuard aGuard( m_aMutex );
    if ( m_bDisposed )
        throw lang::DisposedException(); // TODO

    if ( !m_pOleObject )
        throw embed::WrongStateException(); // TODO: the object is in wrong state

    if ( !m_aDataFlavors.getLength() )
    {
        // TODO: detect format, the object writes representation in, and return reachable from it formats
        RetrieveObjectDataFlavors_Impl();
    }

    for ( sal_Int32 nInd = 0; nInd < m_aDataFlavors.getLength(); nInd++ )
        if ( m_aDataFlavors[nInd].MimeType.equals( aFlavor.MimeType ) && m_aDataFlavors[nInd].DataType == aFlavor.DataType )
            return sal_True;

    return sal_False;
}